Articulate knee brace



FIG. 1 is a side perspective view of an articulate knee brace showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation thereof;

FIG. 5 is a left side elevation thereof;

FIG. 6 is a rear elevation thereof; and

FIG. 7 is a right side elevation thereof. 

The ornamental design for an articulate knee brace, as shown and described. 